EP3403037A1 - System zur automatischen extraktion von kaltgasen in einem mit einem kryogenen fluid arbeitenden gefrierschrank - Google Patents

System zur automatischen extraktion von kaltgasen in einem mit einem kryogenen fluid arbeitenden gefrierschrank

Info

Publication number
EP3403037A1
EP3403037A1 EP17702424.7A EP17702424A EP3403037A1 EP 3403037 A1 EP3403037 A1 EP 3403037A1 EP 17702424 A EP17702424 A EP 17702424A EP 3403037 A1 EP3403037 A1 EP 3403037A1
Authority
EP
European Patent Office
Prior art keywords
cabinet
extraction
enclosure
cryogenic fluid
extraction tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17702424.7A
Other languages
English (en)
French (fr)
Other versions
EP3403037B1 (de
Inventor
Didier Pathier
Christian Reymond
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP3403037A1 publication Critical patent/EP3403037A1/de
Application granted granted Critical
Publication of EP3403037B1 publication Critical patent/EP3403037B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/045—Air flow control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/005—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces in cold rooms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
    • F25D3/102—Stationary cabinets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/12—Devices using other cold materials; Devices using cold-storage bodies using solidified gases, e.g. carbon-dioxide snow
    • F25D3/122—Stationary cabinets

Definitions

  • the present invention relates to the field of cabinets used for deep freezing or storage of food products, medical or biological, using a cryogenic gas as a cooling fluid, and it is particularly interested in the gas extraction system equipping such cabinets and that is an important element.
  • the first solution is to install a system of permanent heating of the joints so as to avoid that they go down too low in temperature and that they lose their elastic properties.
  • the joints then remain flexible and watertight longer than when they are subjected to low temperatures.
  • the leakage problem is then delayed without being removed, which can sometimes be appropriate.
  • this technique has a significant cost.
  • the second solution is to install an active extraction (fan in the extraction tube, see above), which will create a vacuum inside the cryogenic chamber.
  • an active extraction fan in the extraction tube, see above
  • the freezer then leaves no gas out in the production room and the small air inlet in the device does not disturb the freezing process to the extent that this air intake remains at a limited level.
  • an active extraction is installed.
  • the latter consists of a fan installed in the tube extraction, a power supply and a control system that triggers its operation when necessary. All this set has a significant cost in the total cost of the freezer installation and when possible, an installation without active extraction will always be preferred by the production site.
  • the present invention seeks to provide a technical solution which aims to overcome the problem of door seals cryogenic cabinets at a negligible cost.
  • the proposed solution comprises a flap (flap whose cost is negligible), located at the entrance of the extraction tube in the freezer cabinet, flap extending inwardly of the cabinet, and whose shape, the position and orientation can take advantage of the turbulence created by the fans.
  • a flap flap whose cost is negligible
  • flap flap whose cost is negligible
  • the turbulence created is partially deflected by the flap towards the extraction tube, thus pushing the gases towards the outside of the enclosure and thus creating a vacuum inside the freezing chamber.
  • This panel will be chosen according to the type of fans used in the cabinet and their direction (clockwise or counterclockwise) of operation.
  • this component must be studied to disturb as little as possible the freezing process of the cabinet (studied for example by modeling or simply by actual cabinet tests), especially to verify that the component provides the desired effect which is to create a depression inside the cabinet, that the shutter does not disturb too much the circulation of the air in the cell and that it does not degrade the heat transfer coefficient in the freezer cabinet.
  • the attached figures illustrate four embodiments of these components, depending on whether the extraction is located at the bottom or top of the freezer cabinet and that the fans turn clockwise or counterclockwise.
  • FIG. 3 illustrates an hourly operating situation of the fans, and where the extraction is located at the top of the freezer cabinet.
  • the flap positioned at the inlet of the extraction tube towards the inside of the freezing cabinet (view of the middle), at least part of the turbulence rushes into the tube inlet. extraction (right view).
  • the shutter here has a truncated cylinder shape.
  • FIG. 4 appended illustrates a counterclockwise operation situation of the fans, and where the extraction is located again at the top of the the freezer cabinet.
  • the shutter positioned at the inlet of the extraction tube towards the inside of the deep-freeze cabinet (in the middle view), at least part of the turbulence rushes into the tube inlet. extraction (right view).
  • the shutter here has a form of "bent tube”.
  • the invention relates to a cabinet used for freezing or storing food products, medical or biological, using a cryogenic fluid as a cooling fluid, cabinet type:
  • extraction system comprising an extraction tube connected to a wall of the cabinet and connecting the speaker to the outside;
  • the shutter whose shape, the position and orientation allow to divert to the extraction tube all or part of the turbulence created by said convection fan or fans.
  • the vacuum created in the enclosure is adjustable by changing the speed of the fans and can go up to 200Pa (2mbar).
  • This device performs an action comparable to that of an active extractor (fan installed in the extraction pipe) as practiced according to the prior art, but without active fan and its associated costs (the cost of the component implemented here is simply derisory).
  • This system is suitable for freezer cabinets operating with liquid nitrogen or liquid CO 2 . It will prove particularly useful for CO 2 applications because in this case, even small gas leaks often have a strong impact in the production floor and are rarely tolerable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
EP17702424.7A 2016-01-13 2017-01-10 System zur automatischen extraktion von kaltgasen in einem mit einem kryogenen fluid arbeitenden gefrierschrank Active EP3403037B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1650248A FR3046668B1 (fr) 2016-01-13 2016-01-13 Systeme permettant l'extraction automatique des gaz froids dans une armoire de surgelation fonctionnant avec un fluide cryogenique
PCT/FR2017/050050 WO2017121951A1 (fr) 2016-01-13 2017-01-10 Système permettant l'extraction automatique des gaz froids dans une armoire de surgélation fonctionnant avec un fluide cryogenique

Publications (2)

Publication Number Publication Date
EP3403037A1 true EP3403037A1 (de) 2018-11-21
EP3403037B1 EP3403037B1 (de) 2023-10-18

Family

ID=55806530

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17702424.7A Active EP3403037B1 (de) 2016-01-13 2017-01-10 System zur automatischen extraktion von kaltgasen in einem mit einem kryogenen fluid arbeitenden gefrierschrank

Country Status (6)

Country Link
US (1) US20190017738A1 (de)
EP (1) EP3403037B1 (de)
ES (1) ES2965038T3 (de)
FR (1) FR3046668B1 (de)
PT (1) PT3403037T (de)
WO (1) WO2017121951A1 (de)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1654343A (en) * 1924-11-24 1927-12-27 Charles A Moore Precooling structure
US1832874A (en) * 1930-03-19 1931-11-24 Charles A Moore Air conditioning device for cold storage rooms
US4344291A (en) * 1980-04-28 1982-08-17 Liquid Carbonic Corporation Cryogenic cabinet freezer
JPH0112150Y2 (de) * 1985-11-06 1989-04-10
FR2979697B1 (fr) * 2011-09-07 2013-09-27 Air Liquide Systeme d'amelioration de l'equilibrage des gaz froids dans un tunnel de surgelation par la mise en oeuvre de zones tampon et de volets interieurs

Also Published As

Publication number Publication date
EP3403037B1 (de) 2023-10-18
PT3403037T (pt) 2023-12-07
ES2965038T3 (es) 2024-04-10
FR3046668A1 (fr) 2017-07-14
FR3046668B1 (fr) 2018-02-16
US20190017738A1 (en) 2019-01-17
WO2017121951A1 (fr) 2017-07-20

Similar Documents

Publication Publication Date Title
EP2577176B1 (de) Heizungssystem mit einer monoblock wärmepumpe für den aussenbereich mit einem integrierten sonnenkollektor als verdampfer
CN109425139B (zh) 具有多个温度区的制冷器具
CN105466117A (zh) 一种冷冻冷藏装置
CN104567192A (zh) 冰箱
JP2018054201A6 (ja) ダクトファンモジュール及びこれを用いた冷却ユニット
JP2018054201A (ja) ダクトファンモジュール及びこれを用いた冷却ユニット
FR3073040A1 (fr) Dispositifs de securite pour installations aerauliques de froid et pompes a chaleur utilisant des fluides frigorigenes toxiques ou inflammables
FR2982936A1 (fr) Dispositif de refroidissement d'un fluide et son procede associe
WO2017121951A1 (fr) Système permettant l'extraction automatique des gaz froids dans une armoire de surgélation fonctionnant avec un fluide cryogenique
EP2034247A1 (de) Wand-Klimaanlage mit Eiswasser und natürlicher Belüftung zum Abkühlen und Entfeuchten der Umgebungsluft eines Raums
FR3045790A1 (fr) Installation frigorifique d'un batiment
US10976096B2 (en) Refrigerated enclosure opening and methods
FR2796136A1 (fr) Groupe frigorifique ou pompe a chaleur a echangeur a air exterieur comportant un dispositif enterre avec deviation des flux d'air
FR2927162A1 (fr) Appareil de refrigeration comprenant un dispositif de fabrication de glacons
EP3943858A1 (de) Trockener oder adiabatischer luftkondensator, der ein begrenzungssystem für kühlmittellecks umfasst
FR2493972A1 (fr) Procede de degivrage d'appareils de traitement d'air a pompe a chaleur et dispositif pour l'execution du procede
EP3480526B1 (de) Heiz- und/oder warmwassererzeugungsanlage für den sanitärbereich in einem gebäude
EP3943856B1 (de) Trockener oder adiabatischer luftkondensator, der ein neutralisierungssystem für kühlmittellecks umfasst
EP2977687A1 (de) Kühl-, klimatisierungs- oder heizsystem mit getrennten einheiten, und gehäuse zur aufnahme einer der einheiten
CN204404663U (zh) 冰箱
FR2672114A1 (fr) Unites de refrigeration pour enceintes refrigerees et installation de refrigeration utilisant de telles unites.
EP3943857B1 (de) Kühleinrichtung mit einem luftkondensator, der ein erfassungssystem für kühlmittellecks umfasst
WO2013034827A1 (fr) Systeme d'amelioration de l'equilibrage des gaz froids dans un tunnel de surgelation par la mise en œuvre de zones tampon et de plafonds soufflants exterieurs
CH642439A5 (fr) Installation de chauffage pour locaux a usage d'habitation ou industriel comportant une pompe a chaleur.
FR3092905A1 (fr) Pompe à chaleur extérieure à isolation acoustique tubulaire

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20180813

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20211115

17Q First examination report despatched

Effective date: 20211122

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20230614

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602017075412

Country of ref document: DE

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Ref document number: 3403037

Country of ref document: PT

Date of ref document: 20231207

Kind code of ref document: T

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20231129

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20231221

Year of fee payment: 8

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20240119

Year of fee payment: 8

REG Reference to a national code

Ref country code: AT

Ref legal event code: UEP

Ref document number: 1622799

Country of ref document: AT

Kind code of ref document: T

Effective date: 20231018

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240119

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240218

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2965038

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20240410

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231018

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20240227

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20240122

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231018

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240218

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240119

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240118

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240119

Year of fee payment: 8

Ref country code: CH

Payment date: 20240202

Year of fee payment: 8